Specifications

DHCP Overview
17-2 DHCP Server Configuration
•NetBIOSWINSserver(s)andnodename
• Bootfile
•DHCPoptionsasdefinedbyRFC2132
Configuring a DHCP Server
ForDHCPtofunctiononSecureStackB2systems,thesystemhasto“knowabout”theIPnetwork
forwhichtheDHCPpoolistobecreated.
ThefollowingtasksprovidebasicDHCPserverfunctionalitywhentheDHCPpoolisassociated
withthesystem’shostIPaddress.
1. Configurethesystem(stack)host
portIPaddresswiththesetipaddresscommand.Oncethe
system’sIPaddressisconfigured,thesystemthen“knows”abouttheconfiguredsubnet.For
example:
set ip address 192.0.0.50 mask 255.255.255.0
2. EnableDHCPserverfunctionalityonthesystemwiththesetdhcpenablecommand.
3. ConfigureanIPaddresspoolfordynamicIPaddressassignment.Theonlyrequiredstepsare
tonamethepoolanddefinethenetworknumberand maskforthepool.Notethatthepool
hastobeinthe
samesubnetandusethesamemaskasthesystemhostportIPaddress.For
example:
set dhcp pool auto-pool network 192.0.0.0 255.255.255.0
AllDHCPclientsservedbythisswitchmustbeinthesameVLANasthesystem’shostport.
OptionalDHCPservertasks include:
•Youcanlimitthescopeofaddressesassignedtoapoolfordynamicaddressassignmentwith
thesetdhcpexcludecommand.Upto128non‐overlappingaddressrangescan
beexcluded
ontheSecureStackB2.Forexample:
set dhcp exclude 192.0.0.1 192.0.0.10
• Configurestaticaddresspoolsformanualaddressassignment.Theonlyrequiredstepsareto
namethepool,configureeitherthehardwareaddressoftheclientortheclientidentifier,and
configuretheIPaddressandmaskforthemanualbinding.Forexample:
set dhcp pool static-pool hardware-address 0011.2233.4455
set dhcp pool static-pool host 192.0.0.200 255.255.255.0
•SetotherDHCPserverparameterssuch asthenumberofping packetstobesentbefore
assigninganIPaddress,orenablingconflictlogging.
Note: A total of 16 address pools, dynamic and/or static, and a maximum of 256 addresses for the
entire switch, can be configured on the SecureStack B2.
Note: The IP address of the system’s host port is automatically excluded.